Wavepackets harmonic region

Figure 5 shows a plot of the magnitude of the overlap for / = 0, K0/ (f)> sl. versus time. The magnitude of the overlap decreases as the wavepacket spreads out. There is no recurrence. The steeper the inverted potential (i.e., the higher coj), the faster the wavepacket spreads out and the faster the overlap decreases. Because the inverted harmonic potential surface can model only a small area around the Frank-Condon region, this model can only be applied to short time dynamics. 

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